Hello.
Have you fixed it?
What is your acceleration and jerk parameters?

I had the same issue but only on curves/circles it was on my ramps 1.4 with unknown firmware.
I've installed the Marlin firmware and it fixed this.
I think there was some wrong acceleration/jerk.
Now i use: XY jerk-20, XY acceleration 3000
Curves are good now, but i have horizontal wobbling after each corner, ill try to take a picture tomorrow.